Samsung SCH-A670

i just got this new A670 two days ago. I had a vx6000 which got jacked.. i knew a trick on that were u can record any song with a picture message then close the phone, and the pic message saves with the song, ( or you can send it to yourself and have free ringtones ) for this phone.. i send the pic message to myself but everytime i try.. it says retrieved failed or something like that.. why cant i get pic messages